Cutting tool



May 10, 1932- w. F. STUCKEMAN 1,857,795

CUTTING TOOL Filed July 18, 1929 Patented May 10, 1932 UNITED, v`"s.'mris @PArENTfjo-FFICE WILLIaMr. sfrlicnnnniv,l or cnnnicro,ILLINc'Is, Assrsfrronro1 n. B. RoUsE acou- PANY, `Oll'l CHICAGO, ILLINOIS,

A CORBORATION' or ILLINOIS CUTTING .TOOL

Application led July 18,

My invention relates to cutting tools and is of particular utility when employed in connection with planes for cutting printers rules to size, though the invention is not to belimited to any particular use to Vwhich it may be put.

The present invention, in its preferred embodiment, is-an improvement upon the structure disclosed in United States Patent l 1,688,660, dated October 23, 1928.v The structure `disclosed in that patent includes a cutter, a work holdingtable formed with a track circularly curved upon a center adjacent the cutter, a work 'presenting member having sides converging toward the cutter and movable upon the table and engaging said track 4to be guided in its movements, a clamping bolt whoserstem has two angular parts, one of these angular parts being assembled with the work presenting member and passing through a slot formed in the tableand which slot extends in the direction of movement of the work presenting member, and a clamping nut threaded upon the other angular part of the bolt stemfand adapted to press against the peripheral portion of the work presenting member that is between the sides of such member to hold this member in selected adjustment, said tablehaving a formation engaging said other angular part of the bolt j stem and, thereby, positioning the work presenting member with respect to the table. My invention is preferably embodied in a structure* having the aforesaid characteristics and resides in the provision of improved means whereby the-work presenting member is pressed downwardly` upon the table when this member is being clamped in position.

My inventiomas specifically embodied, resides in forming the clamping bolt in two sections, one of the sections passingthrough the e slot and having a lateral Aextension which bears upon a portion of the table that is between the work presenting member andthis extension, thisbolt section thus acting as a Y bell `crank lever which forces theworlzY presenting member downwardly upon the table when the clamping nut is turned against the side of the table.

I will explain my invention more fully by j 1929. serial No. svazsa v1, on a larger scale; and Fig. 4: isa sectional view on line 4-4 of Fig. L3. n'

The cuttingtool Vemployed is preferably a shavingplane. The stock 1 oft-he plane is formed with a transverse slot 2 therethrough through rwhich the cutting V,end ofthe knife vor bit 3 projects jbeyond the bottom or sole of the ystoclra distance corresponding to the thickness' of the shavingv which is to be removed from the work.` I The plane bit is held in its selected adjustment against the top end of the stock by meansof a clamping bolt 5 whose stem is screwed into the block and whose head 5 clamps the washer 6 against the top surface of the bit to clamp the 'bit against the top surface ofk the stock end 4.

vThe surface of the stock endl which is engaged bythebit is usually inclined so that the knife is presented at the proper angle to the workfor cutting shavings therefrom 75 and for directing the shavings through the slot yinto the hollow portion l of the stock.

, When itis desired to readjust the plane bit,

said bolt isloosened, the bolt passing through an elongated slot 7 in the bit which permits longitudinal adjustment of the bit. After the bit has beenl suitably adjusted, the bolt is tightened to hold it in selected adjustment.

In the embodiment of the invention illustrated, thestock of the plane does not `directly carry a handle, the handle 8 for operating the planestock and the bit carried by the stock being pivotally mounted at 9 upon the earl() which is Vprovided upon the pedestal` 10. The handle has an enlargement 11y which is received between the body of the stock and the shoulders 12 so that the stock may readily be moved up and dovvn andmay be pressed, during such movement, against the work which is located upon the table 13` thatvis carried bythe pedestal `10 and isan- Y gular lto ,the stock 1 and-.its plane of movement. The work is held against the leading portion-of the sole of the stock, that which is in advance of the cutting edge of the bit,

by means of the block 14 and the rack bar 15, fixed upon the table, said block being held in adjustable relation to the rack by any suitable means, such as that illustrated in the aforesaid patent.

The block 14 desirably carries'a U-shaped member 22. The extreme ends of the sides of the U-shaped member are received inthe groove 26 that is vformed in the rack to hold the block 14 in exact parallelism with the rack. The work 27 being operated upon may be a printers rule which is prevented from being projected outwardly beyond the innermost end of the .U-shaped member 22 because of the reception of this end in the groove 26. Y

The rack 15 constitutes a portion of a quadrant 28 which is in the preferred form of work presenting member, the work engag ing side of the rack constitutingv a work engaging side ofthe quadrant. The other straight work engaging side of the quadrant visfp'rovided with a clamping device 'which isinclusive of a bracket 29 having one side journaled in the quadrant, the other side of thisI bracket carrying a clamping bolt 31' which is threaded in this side, the inner end of the bolt being adapted to engage the `work 27 for clamping it during trimmingy of one end ofthe work. As illustrated most lclearly in Fig." 2', the quadrant isY adjusted for miteringthe endsY of aprinters rule 27. One end of therule is trimmed when it is held by the clamp-ing bolt 31. After thisl end hasfbeen suitably trimmed, it is released from the clam-'p and the trimmed'. end thereof" is "positioned against the U-shaped gage stop 22. Theltrimming operation upon both ends lof the rule are-eilected in the same direction from the printing edgeof thev rule toward the basev edge, sofvthat any burs which are formed f are upon the base edge of the rule rather than Vin two angularly related sections 32, 32 which are in pivotal connection. at 322.Y The bolt section 32 has an upright portion which passes through the openings 13 and 28 formed in the table 13 and work positioner, respectively. Theopening 13" is an arcuate slot inthe'table and concentric with the arcu- V'ate outer edge of the table, while the opening y28" is preferably a circular hole in the work Vquadrant 28;. A pin.` 33 passes through the upper end of the' bolt section 32. A washer Y3.4'tis interposed between said'pin and the member 28. The other branch of the bolt i section 3'2 is; formed with a rounded nose 323 table 13. A clamping wing nut 35 is screwed upon the outer end of the bolt section 32 and is engageable with the ears 282 upon the work presenting member 28, the stem section 32 of the bolt passing between these ears. The 7G rounded nose 323 is received in a recess in the bottom of the table 13 and engages the j top or horizontal wall of this recess. A portion ofthe stem section 32 adjacent this nose engages a side 132 of the recess 13. When 75 the nut 35 is screwed ina clamping direction toward the table 13 horizontal clamping pressure is exerted against the aforesaid recess side 132. At the same time the pin 33 is pressed downwardly upon the washer 34 80 because ofthe turning effort exerted upon the stem section 32 by the stem. section 32', the stem section 32 thus actingk as a lever whose rounded nose 323 has fulcrum engagement with the bottom of the table 13. The work presenting member 28 is thus both effectively clamped against rotation and iirml pressed against. the top of the table13 by the action of the single clamping element, namely, the nut 35.

Suchl changes may be made asV fall within the scope of the following claims without departing from the invention.`

Having thus described my invention, I claim:

1.. The combination with a cutter; ofY a workI holding table formed with a track circularly curved upon a center adjacent the cutter; a work presentingv member having sides converging toward the cutter and mov-C able upon the table and engaging said track to be guided in its movements; a clamping bolt whose stem has two angular parts, one of these angular parts beingv assembled with the work presenting member and passing" through a slot formed in the table andv which slots extends in the direction of movement of the work presentingmember; and a clamping nut threaded upon the other angular part of the bolt stem and adapted to press' againsti 110 the peripheral portion of the work presenting member that is between the converging' sides of said member to hold this member in selected adjustment, said table having a formation engaging the bolt stem, the angular part of the bolt stem that passes through the slot being pivotally connected with the other part of the bolt stem and in the form of a lever having fulcrum engagement with the underside of the table to draw the work presenting member downwardly upon the table when the nut is turned in a clampingv direction.

2. The combination with an operating tool; of a work holding table; awork presenting member movable upon the table; a clamping bolt whose stem has two angular parts, one of these Vangular parts being assembled with the work presenting member and passing throughY a slot formed in the table and which slot extends in the direction of movement of the Work presenting member; and a clamping nut threaded upon the other angular part of the bolt stem and adapted to press against the peripheral portion of the Work presenting member, said table having a formation engaging the bolt stem to hold said work presenting member in selected adjustment With respect to the table, the angular part of the bolt stem that passes through the slot being pivotally connected With the other part of the bolt stem and in the form of a lever having fulcrum engagement with the underside of the table `to draw the Work presenting member downwardly upon the table when the nut is turned in a clamping direction.

3. The combination With an operating tool; of a member for presenting Work thereto; a table upon which the Work presenting member is adjustable; and a clamping device for clamping said Work presenting member to said table, said clamping device including a clamping bolt Whose stem has tWo angular parts in pivoted relationshipto each other,

one of said angular parts being fulcrumed against said table, and a clamping nurl on said otherangular part and in Contact With said Work presenting member, constructed and arranged whereby upon movement of said clamping nut in clamping direction said Work presenting member is pressed against the table both substantially in the plane of the table and transversely of said plane.

In Witness whereof, I hereunto subscribe my name.

WILLIAM F. STUCKEMAN. 

